For those seeking a more durable and technical thermal activewear vest, The North Face Women's Aconcagua Vest is a top choice. This vest is made from a combination of nylon and polyester, providing excellent durability and water resistance. It features 550-fill goose down insulation, ensuring superior warmth in cold conditions. The vest also has a stylish quilted design and a stand-up collar for added protection. With its high-performance features and trusted brand name, it's no wonder this vest is a best seller on Amazon.